<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>css引入方式</title>

  <!-- 外部样式引入 -->
  <!-- link 引入外部样式表; rel: 关系, 样式表 -->
  <link rel="stylesheet" href="./css/my.css" />
</head>
<body>
  <p>这是 p 标签</p>

  <!-- 行内样式引入 -->
  <!-- 行内, style="css属性" -->
  <div style="color: green; font-size: 30px;">这是 div 标签</div>
</body>
</html>